Acta Crystallographica Section C

Crystal Structure Communications

Volume 64, Part 4 (April 2008)

metal-organic compounds

 

Diacetonitrile-1N,3N-bis{-trans-N-[3-(dimethylamino)propyl]-N'-(2-hydroxyethyl)oxamidato(2-)}-1:2⁵N,N',O:O',N'';2:3⁵O',N'':N,N',O-dithiocyanato-1N,3N-tricopper(II)

J.-L. Liu, C.-W. Yan, Y.-T. Li, Z.-Y. Wu and W.-J. Zhang

Abstract: The title compound, [Cu₃(C₉H₁₇N₃O₃)₂(NCS)₂(CH₃CN)₂], contains two square-pyramidal Cu^II units chelated by a transoid asymmetrical N-[3-(dimethylamino)propyl]-N'-(2-hydroxyethyl)oxamidate (dmapheoxd) dianion {H₂dmapheoxd is N-[3-(dimethylamino)propyl]-N'-(2-hydroxyethyl)oxamide}, which coordinates to another Cu^II ion in a square-planar environment lying on a crystallographic inversion center. Thus, the trans-oxamide ligand bridges two Cu^II ions with different coordination numbers, and this is the first instance of such a zero-dimensional oxamide-bridged complex. The activated methyl group in the coordinated acetonitrile molecule is involved in a strong nonclassical C-HO hydrogen bond, which contributes to a one-dimensional chain extending in the b direction. Considering the presence of weak bonding between the Cu atom and the uncoordinated hydroxyl O atoms, a two-dimensional structure is formed parallel to the ab plane.

Formula: [Cu₃(C₉H₁₇N₃O₃)₂(NCS)₂(C₂H₃N)₂]

Copyright © International Union of Crystallography
IUCr Webmaster